'LGT' Construction Diary

[barackuda]

Good lord !!!!!!!! you are a magician, Shin.... beautiful speakers, precise work.... I just hope i could make it to the meeting and bring my speakers with me, but i am afraid the XO wont be finished in that time...i only started....maeby some folks can hep out with that

[Bob Barkto]

Sorry guys, haven't been able to take enough time away from other duties to give it the thought I need.
But I'm almost done. Tomorrow for sure.

[ShinOBIWAN]

Very quick update to say that things are moving along nicely. One cabinet is pretty much now sprayed up with just some finishing left. My Flexunits shipped today and will be with me early next week so guess I'm going to have to force myself to listen to them soon... oh well

[gbyleveldt]

I wondered what happened to you, though you wondered off to the Shin Bin, hahaha (OK, that was silly)

[ShinOBIWAN]

Originally posted by gbyleveldt
I wondered what happened to you, though you wondered off to the Shin Bin, hahaha (OK, that was silly)

Hi gbyleveldt

Have been hanging around on another forum discussing amps and preamps for these.

Russ White (a fellow DIYA member and one of the guys behind Twisted Pear Audio) has very kindly agreed to undertake a bespoke, and rather kickass, pre-amp.

Its a 10 in and 14 out solution with remote control that will act as the master volume for the stereo 3-way fronts as well surrounds, center and LFE.
Its based around a microcontroller and BurrBrown PGA2320 preamp sections. With operating specifics such as PLED level display, rotary encoded volume, microcontroller sleep state when not issuing commands(less EMI), last memory recall of volume setting, mute and will power on/off all 10 amplifier modules spread out over 3 cases from a single press of either the remote or power switch.

I've also just bought six GB300 kits from Greg over at SKA:

http://www.ska-audio.com/diy/003.html

Which will eventually be ten channels(when the bank balance recovers) to give each driver within the LGT's 300w/8ohm to work with

The electronics may very well be the most impressive part of this project. I'm pretty excited about them.

All the bits mentioned above will be stuffed in three of these:

[ALDO]

pretty case
you had found them or?
thank
Aldo

[ShinOBIWAN]

Originally posted by ALDO
pretty case
you had found them or?
thank
Aldo

They're from ATI Research.

[gbyleveldt]

Hi Shin,

I'm also using Greg's SKA's, just not on your scale, hehe! I've only got 5 channels for my HT setup.

PGA2320? Didn't know there's a newer one out, I'm running a 6 channel setup with PGA2310's, also rotary encoders, IR remote and MCU based of my own design. The 'piece de resistance' is the VFD for a display - expensive as hell but well worth the effort

See pic's of the pre-amp



I still need to finish the pre-amp, but my DIY stuff took a bit of a back seat as I got busy with real life


I'm itching to get going with with a stepped relay attenuator - as Russ has designed, but again, I just don't have the time. Ol' Russ is a helluva guy!

Anyway - we all await the completion of your project with anticipation!!!

Cheers

Gert

[Ray Collins]

Bob,
Have you had time to put together the compressor/spraygun info?

Ray

[ShinOBIWAN]

Originally posted by gbyleveldt
Hi Shin,

I'm also using Greg's SKA's, just not on your scale, hehe! I've only got 5 channels for my HT setup.

PGA2320? Didn't know there's a newer one out, I'm running a 6 channel setup with PGA2310's, also rotary encoders, IR remote and MCU based of my own design. The 'piece de resistance' is the VFD for a display - expensive as hell but well worth the effort

Cheers

Gert

That's some nice work Gert.

What do you think to the SKA's?